REST API Sequence Diagram
This REST API sequence diagram follows a request from the client through the gateway and service layer. It makes the database read and the final 200 response explicit, which is useful for documenting ownership and latency boundaries.
Diagram source
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title: REST API Request
Client -> Gateway: GET /orders/42
Gateway -> Service: Route request
Service -> Database: Query order
Database --> Service: Order record
Service --> Gateway: 200 OK
Gateway --> Client: JSON response